Practice Docks And Harbor Engineering Multiple Choice Questions with Answers Quiz-4

Q.1.

The fixed mooring does not require

mooring post
bollard
anchors
capstan.

Q.2.

Cretans :

are the harbours established on the island south east of Greek mainland
are the natives of crete, an island south of Greek mainland
are the plants, grown in the neighbourhood of harbours
none of the above.

Q.3.

The important component of a sea port is

terminal buildings
the docks
the harbour
all of these.

Q.4.

Which one of the following statements is not relevant to hydrographic survey :

establishment of a chain of bench marks near the shore line
establishment of horizontal control points on the shore
determination of the sea bed profile
depicting the irregularities in the shore line, islands and projecting rocks
E. none of these.

Q.5.

The shore line survey includes :

depicting the shore line
depicting the prominent details on shore line
depicting the high water line
depicting the low water line
E. all the above.

Q.6.

The smoothened surface of the front face of the guay walls, is known as fending which is made of

granite stone
timber
steel
all the above.

Q.7.

A lead line or sounding line

is stretched thoroughly when wet before it is graduated
should be soaked in water for about one hour prior to taking soundings
is adjusted at regular interval
is generally used for depths exceeding 6 m
E. all the above.

Q.8.

Which one of the following land marks on the coast line must be depicted on hydrographic maps ?

shore line
light houses
church spires
all the above.

Q.9.

Depth of borings for soil investigation, is generally kept below low water level

30 m
35 m
45 m
40 m

Q.10.

Littoral drift

is the raised line of sand, parallel to the sea coast
is the slow movement of surface water at sea caused by the wind
is a current parallel to the shore, caused due to tangential component of the wind
is a current perpendicular to the shore line caused due to wind.

Q.11.

The heaviest line is used to democrate

the low water line
the high water line
the limit of swamps
the direction of current.

Q.12.

If F is the fetch, the straight line distance of open water available in kilometres, the height of the wave in metres is

0.15 F
0.20 F
0.28 F
0.34 F

Q.13.

A low wall built out into the sea more or less perpendicular to the coast line, to resist the travel of sand and shingle along a beach, is called

break water
break wall
groins
shore wall.

Q.14.

At a place the shore line is along North West-South East. The wind is blowing from the north. The littoral drift will be along

south east
south
south west
west
E. north west

Q.15.

Flow of air from one place to the other is caused due to

the sum of elevation
pressure head
velocity head
all of the above.

Q.16.

According to the recommendations of International Navigational Congress inthe ratio of length to width at the entrance for cargo vessels is

5.5 and 6.0 to 1
6.2 and 6.8 to 1
7.4 and 7.8 to 1
8.2 and 8.5 to 1

Q.17.

Buoys which support the cables to which vessels are attached are of

cylindrical shape
drum
pear shaped
spherical shape
E. all of these.

Q.18.

The beach is built:

with largest material locally available to the waves
with large material locally available to the waves
with fine material locally available to the waves
with finest material locally available to the waves.

Q.19.

If ‘Hs’ is the significant wave height, then the average wave height and highest wave height respectively are given by

0.6 Hs and 1.67 Hs
0.6 Hs and 1.87 Hs
1.27 Hs and 1.87 Hs
1.27 Hs and 1.67 Hs

Q.20.

At a given port, the fetch isnautical miles, the maximum height of storm wave will be

2.073 m
8.169 m
9.144 m
6.8 m

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